Robot Trains vs Amber
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Robot Trains
Embark on an adventure to save Railworld from a snowstorm by solving over 20 interactive games. Collect energy balls across different worlds to power a rocket and defeat the storm. This app strengthens cognitive skills and is designed for young learners.
- Over 20 interactive mini-games
- Strengthens cognitive functions
- Reward-based learning system
- Approved by pre-school specialists
- Available in 7 languages
- Interactive learning with visual support
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Duke, Mos and Dos have made a big mess again. This time, they have launched a rocket with wind and water energy that has caused a great snowstorm. If we don’t do something immediately, Railworld is in danger. And only the Robot Trains can save it launching a rocket which contains a bit of 4 energies ―Water, Wind, Fire and Light― against the snowstorm. In this amazing App you will travel with Kay, Maxie, Victor, Genie and Alf to the different worlds of Railworld to get enough energy balls solving the games that you will find in each world. Only when you get enough energy balls you will be able to unlock the last game that will help you save Railworld. CONTENTS In Railworld you will have to solve more than 20 different games. WATERLAND Pipes: Make the water of Waterland reach its destination connecting the pipes. Classifying: Distribute and classify the energy balls that go to each one of Duke’s wagons. Coloring: Color all the Robot Trains. Battleship: Show that you are a great strategist placing your trains and winning the game. SUNNYLAND Memory: Listen and pay attention to repeat as many series of colors and sound as you can. Music: Do you know how to play the piano? In Sunnyland, the Railers will teach you to play some songs. Jigsaw puzzles: Have fun solving different jigsaw puzzles of Railworld. Growing: In Sunnyland, the Railers are great farmers. Help them pick the tomatoes before they are too ripe. WINDLAND Maze: Find the right way to get to your destination. Platform: Guide the Railers flying through the canyon and avoiding obstacles. Series: Find the series of elements and group them. Visual perception: Look carefully at the pixelated images and find the right pairs. MOUNTAINLAND Memory: Find the pair for each card. Flowfree: Connect the points of the same color without crossing the lines. Shooter: Sharpen your aim to throw snowballs at Duke, Mos and Dos. Calculation: Strengthen your math with additions and subtractions. Duke Letters: Mos and Dos are learning to write, teach them how to write the letters tracing them with your finger. Energy Once you have got all the energy balls, you can throw them against the clouds to save Railworld. FEATURES - Interactive learning and educational game for children from 3 to 7 years old. - It strengthens learning and development of cognitive functions: perception, memory, observation, space, reasoning, numbers, environment, concentration and letters. - All activities contain explanations and visual support. - It encourages learning through a system of rewards and goals. - It helps autonomous learning. - App approved and supervised by specialists in pre-school education. - Available in 7 languages: English, Spanish, French, Italian, German, Russian, and Portuguese. ABOUT TAP TAP TALES We are a startup which develops apps specialized in educative quality contents for children. We work with the characters of the most popular TV children’s licenses, like Caillou, Hello Kitty, Maya the Bee, Shaun the Sheep, Peter Rabbit and other characters of Clan TV. RATE US: YOUR OPINION IS IMPORTANT FOR US Tap Tap Tales cares about your opinion, so we encourage you to value this app and if you have any comment to make, we'll appreciate that you send it to our e-mail address: hello@taptaptales.com FOLLOW US Web: http://www.taptaptales.com Facebook: https://www.facebook.com/taptaptales Twitter: @taptaptales
Amber
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Stories that shaped how people think, lead, dream and fear. Now on your screen, complete and playable. Philosophy. Strategy. Horror. Myth. Detective cases. Fairy tales. Timeless fiction. Each one rebuilt as an interactive edition. Pick a work. Press play. MEMBERSHIP OPENS EVERYTHING One membership unlocks every work in the collection and everything inside it. No separate purchases, no locked chapters, no advertising. PLAY THE STORY Every work has its own games, built from its own material: sliding puzzles cut from its artwork, memory matching, identify the scene, spot the false statement, and a spinner that picks where you go next. Every round is drawn from the work itself, so no two are the same. DECIDE, THEN FIND OUT WHY Interactive scenarios put you inside decisive moments and ask what you would do. Choose, then read the reasoning behind each answer and earn progress for thinking it through. LISTEN ANYWHERE Turn any work into continuous narration with adjustable voices and speed, background playback and lock screen controls. It keeps reading while your screen is off. READ THE COMPLETE TEXT The full text of every work, unabridged, in a reading view built for it. Illustrated throughout with original artwork made for these editions. EXPLORE THE WORLD AROUND IT Character profiles that change as the story moves. Glossaries that explain what a footnote would have. Timelines, locations, quotations and curated paths through the themes that run underneath. TRACK WHAT YOU FINISH Progress, streaks, ranks and achievements for each work separately, so one journey never collapses into another. WORKS WITH NO SIGNAL Every word, every illustration and every game is installed with the app. No internet connection is needed to use it, no account, no sign-in, and nothing about what you read leaves your device. IN THE COLLECTION NOW The Odyssey · Dracula · Frankenstein · The Picture of Dorian Gray · The Great Gatsby · Alice's Adventures in Wonderland · The Adventures of Sherlock Holmes · Meditations · The Prince · The Art of War · The Richest Man in Babylon · Blue Fairy Tales · Red Fairy Tales · Green Fairy Tales · Yellow Fairy Tales Each one is a full interactive edition, not an excerpt, and more are in production. A COLLECTION THAT GROWS New works are added over time, and a membership includes them as they arrive. Nothing you unlock is taken away. MEMBERSHIP A subscription is required to open the works. Monthly or yearly, cancel any time in your App Store settings. Prices are shown in the app before you subscribe. SUPPORT Questions or feedback? support@stackbase.space Privacy: https://pages.stackbase.space/legal/privacy-policy Terms: https://pages.stackbase.space/legal/terms-of-service
Screenshots
Verdict
The clearest difference is ads: Amber at none against Robot Trains's shown. Amber also leads on update cadence (fortnightly vs every 45 months). Robot Trains's advantage is device support (3 vs 1) and iOS requirement (12.0 vs 16.4). On price and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Robot Trains sells 1 one-off in-app purchase and Amber sells 2 in-app purchases, starting at $6.99 per month. Whichever you choose, the download price is not the number that matters.
Robot Trains ships an update every 45 months, Amber fortnightly. The most recent releases landed on October 5, 2026 and September 30, 2026 respectively.
| Parameter | Robot Trains | Amber |
|---|---|---|
| Price | Free | Free |
| Rating | 1.7 (6 ratings) — better | — |
| Positive reviews | 33.3% of reviews | — |
| Number of ratings | 6 — better | — |
| Update frequency | Every 45 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 12.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 205 MB | 339 MB |
| Age rating | 4+ | 12+ |
| Developer | Tap Tap Tales, SL | Metin Ata YETER |
In-app purchases
Robot Trains
- Unlock all$2.99
Amber
- Monthly$6.991 Month
- Yearly$49.991 Year









